John w



J. W. ORPHY.

` Lantern.

No. 229,330. Patented June 29,1880.

{vl-PETERS. PHOTOLITHOGRAPHER. WASHKNGTDN. D, C.

UNITED YSTATES PATENT OFFICE.

JOHN w. ORPHY, OE RocHEsfrER, NEvv YORK, AssioNoR ro OHARLEs rr. HAM AND E. D. w. CLARKE, OE sAME PLAOE.

LANTERN.

SPECIFICATION forming part of Letters Patent No. 229,330, dated June 29, 1880.

Application led December 19, 1879.

To all whom it may concern Be it known that I, JOHN W. ORPHY, of the city of Rochester, in the county of Monroe and State of New York, have invented new and useful Improvements in Lanterns, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to that class of lanterns in which the air for the support of com- Io bustion is supplied to the ilame through tubes or air-conduits which are provided with airinlets near the top of the globe or chimney, and which have their lower ends connected with an air-chamber arranged below the burn er and communicating therewith.

The object of this invention is to produce a simple, cheap, `and compact lantern of this character in which theflame is not extinguished when the lantern is exposed to air-currents or .zo subjected to violent agitation.

My invention consists of the 'peculiar construction and arrangement of the air-inlets at the upper ends of the air-tubes, as will be hereinafter fully set forth.

2 5 In the accompanying drawings, Figure `l is `an elevation of a lantern provided with my improvement. Fig. 2 is a vertical section of the upper part of the lantern. Fig. 3 isa horizontal section in line w, Fig. l, looking upward. Fig. 4L is a horizontal section in line z z, Fig. 2, looking down, the air-inlets jj not being shown.

Like letters of reference refer to like parts in the several gures. 4

3 5 A represents the oil-vessel; B, the air-chamber arranged upon the same; C, the burner; D, the globe or chimney, and E the top or cap of the lantern, all of ordinary and well-known construction.

4o F F represent two air-tubes, arranged on the outside of the globe on diametrically-opposite sides thereof, and having their lower ends connected with the air-chamber B in the usual manner. rIhe upper ends, f, of the tubes F F are liattened on their sides and turned inward, so as to rest against the sides of the cylindrical extension Gr of Vthe globe or chimney, or the lower portion of the lantern-top,

without communicating therewith, the upper and inner sides of the extensions f being closed or ilnperf'orated.

h is an air-inlet opening formed in the lower side of the inwardly-turned upperportion, f,of each air-tube F, between the descending portion of thelatter and the side of the lantern-top.

I is an annular flange or shield surrounding the lantern-top and arranged on a level with or slightly above the air-inlets h, so as to protect the latter as much as possible against the exhausting action of passing air-currents. jj are air-inlets formed in the flattened sides ofthe upper portions, f, of the airtubes F, above the inlets h and the iiange I.

The aggregate area of the air-inlets j in each tube is preferably made. about as large as the area of the air-inlet 7L, so that when the airinlets 7L below the flange I are rendered inoperative by the exhausting action of passing air-currents the air-inlets j above the ilange will supply the tubes with the air necessary to sustain the flame, or vice versa.

The flan ge I need not extend from one tube to the other; but the central portion of the flange on each sideV of the lantern may be dispensed with, if desired.

The exterior air is drawn into the tubes F through the openings h and j by the draft of the globe or chimney, and passes down through the tubes into the air-chamber B, and thence through the burner.

The gaseous products of combustion escape from the top ofthe lantern in the usual manner.

If desired, the plate upon which the globe or chimney rests may be provided with a small 4num-loer of iine openings for admitting sufficient cold air into the globe independent of the burner to prevent overheating ofthe globe.

My improved lantern is very simple and compact in construction and very efficient, producing a steady iiame, which is practically not extinguishable when subjected to such motions or exposed to such air-currents to which lanterns are subjected when in practical use.

I am aware that lanterns in which the open upper ends of the air-supply tubes are not connected with the chimney and provided with exit, air-inlets 7L, formed in the bottom plates Io ofthe extensions f, and air-inlets j, formed in the side plates thereof, substantially as set forth.

J CHN W. ORPHY.

Witnesses:

W. P. MOKILLIP, GEO. W. HAM. 

